Finding the Third Proportional to 66,514 and 144,665

Step by Step Solution

1. Step 1: Write the proportion equation
   66,514 : 144,665 = 144,665 : x
2. Step 2: Convert to fraction form
   66,514/144,665 = 144,665/x
3. Step 3: Cross multiply
   66,514x = 144,665 × 144,665
4. Step 4: Simplify right side
   66,514x = 20,927,962,225
5. Step 5: Solve for x
   x = 20,927,962,225/66,514
6. Step 6: Final answer
   x = 314,639.96